diff options
Diffstat (limited to 'lib/Lintian/Check/Fonts/Postscript/Type1.pm')
| -rw-r--r-- | lib/Lintian/Check/Fonts/Postscript/Type1.pm | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Fonts/Postscript/Type1.pm b/lib/Lintian/Check/Fonts/Postscript/Type1.pm new file mode 100644 index 0000000..280eb8f --- /dev/null +++ b/lib/Lintian/Check/Fonts/Postscript/Type1.pm @@ -0,0 +1,130 @@ +# fonts/postscript/type1 -- lintian check script -*- perl -*- + +# Copyright (C) 1998 Christian Schwarz and Richard Braakman +# Copyright (C) 2020 Felix Lechner +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, you can find it on the World Wide +# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free +# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, +# MA 02110-1301, USA. + +package Lintian::Check::Fonts::Postscript::Type1; + +use v5.20; +use warnings; +use utf8; + +use Const::Fast; +use Encode qw(decode); +use Syntax::Keyword::Try; + +use Lintian::IPC::Run3 qw(safe_qx); + +use Moo; +use namespace::clean; + +const my $SPACE => q{ }; +const my $COLON => q{:}; + +with 'Lintian::Check'; + +sub visit_installed_files { + my ($self, $item) = @_; + + return + unless $item->is_file; + + return + unless $item->file_type =~ m/PostScript Type 1 font program data/; + + my @command = ('t1disasm', $item->unpacked_path); + my $bytes = safe_qx(@command); + + my $output; + try { + # iso-8859-1 works too, but the Font 1 standard could be older + $output = decode('cp1252', $bytes, Encode::FB_CROAK); + + } catch { + die 'In file ' . $item->name . $COLON . $SPACE . $@; + } + + my @lines = split(/\n/, $output); + + my $foundadobeline = 0; + + for my $line (@lines) { + + if ($foundadobeline) { + if ( + $line =~ m{\A [%\s]* + All\s*Rights\s*Reserved\.?\s* + \Z}xsmi + ) { + $self->pointed_hint( + 'license-problem-font-adobe-copyrighted-fragment', + $item->pointer); + + last; + } + } + + $foundadobeline = 1 + if $line =~ m{\A + [%\s]*Copyright\s*\(c\) \s* + 19\d{2}[\-\s]19\d{2}\s* + Adobe\s*Systems\s*Incorporated\.?\s*\Z}xsmi; + +# If copy pasted from black book they are +# copyright adobe a few line before the only +# place where the startlock is documented is +# in the black book copyrighted fragment +# +# 2023-06-05: this check has been adjusted because +# Adobe's type hint code[1] (including Flex[2]) became +# open source[3] with an Apache-2.0 license[4] as +# committed on 2014-09-19, making that check a false +# positive[7]. +# +# We continue to check for copyrighted code that is not +# available under an open source license from the origin +# publication, "Adobe Type 1 Font Format"[5][6]. +# +# [1] - https://github.com/adobe-type-tools/afdko/blob/2bf85cf44a64148353b24db17e0cc41ede5493b1/FDK/Tools/Programs/public/lib/source/t1write/t1write_hintothers.h +# [2] - https://github.com/adobe-type-tools/afdko/blob/2bf85cf44a64148353b24db17e0cc41ede5493b1/FDK/Tools/Programs/public/lib/source/t1write/t1write_flexothers.h +# [3] - https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1375813.html +# [4] - https://github.com/adobe-type-tools/afdko/blob/2bf85cf44a64148353b24db17e0cc41ede5493b1/LICENSE.txt +# [5] - https://adobe-type-tools.github.io/font-tech-notes/pdfs/T1_SPEC.pdf +# [6] - https://lccn.loc.gov/90042516 +# [7] - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1029555 + if ($line =~ m/UniqueID\s*6859/) { + + $self->pointed_hint( + 'license-problem-font-adobe-copyrighted-fragment-no-credit', + $item->pointer); + + last; + } + } + + return; +} + +1; + +# Local Variables: +# indent-tabs-mode: nil +# cperl-indent-level: 4 +# End: +# vim: syntax=perl sw=4 sts=4 sr et |